Podcast Beta
Questions and Answers
What is the primary action of the mylohyoid muscle?
Which nerve supplies the hypoglossus muscle?
Which action is performed by the geniohyoid muscle?
What is the blood supply for the mylohyoid muscle?
Signup and view all the answers
Where does the hypoglossus muscle originate?
Signup and view all the answers
Which type of mucosa covers the hard palate?
Signup and view all the answers
What type of epithelium is found on the soft palate?
Signup and view all the answers
What type of epithelium is found in the lining mucosa?
Signup and view all the answers
What is distinct about the connective tissue of the soft palate compared to the hard palate?
Signup and view all the answers
What is a feature of the lamina propria associated with the lining mucosa?
Signup and view all the answers
Which of the following structures is NOT associated with the hard palate?
Signup and view all the answers
What might the appearance of the oral mucosal surface indicate?
Signup and view all the answers
What type of glands are prominent in the soft palate?
Signup and view all the answers
Which of the following glands is associated with the submucosa in the context provided?
Signup and view all the answers
What is the clinical significance of the presence of sialoliths?
Signup and view all the answers
Study Notes
Floor of Mouth Muscles
-
Mylohyoid
- Origin: Mylohyoid line of the mandible
- Insertion: Body of hyoid bone and midline raphe
- Action: Elevates the floor of the mouth and the hyoid bone during swallowing
- Nerve Supply: Mylohyoid nerve (a branch of CN V3)
- Blood Supply: Sublingual artery and facial artery
-
Hypoglossus
- Origin: Body and greater cornu of the hyoid bone
- Insertion: Sides of the tongue
- Action: Depresses the tongue
- Nerve Supply: Hypoglossal nerve
- Blood Supply: Lingual Artery
-
Geniohyoid
- Origin: Inferior mental spine of the mandible
- Insertion: Body of the hyoid bone
- Action: Pulls hyoid bone anteriorly and superiorly; assists in swallowing
- Nerve Supply: C1 through the hypoglossal nerve
- Blood Supply: Hypoglossal Artery, Sublingual Artery
Floor of Mouth Histological Structure
-
Floor of the Mouth (FOM)
- Appearance: Smooth moist surface, may have sublingual papillae, may show sialoliths (calcified structures also known as salivary stones that form in the salivary glands or their ducts), or oral mucosal lesions
- Type of mucosa: Lining mucosa
- Epithelium: Non-keratinized stratified squamous epithelium
- Lamina Propria: Loose connective tissue with glands (sublingual and submandibular glands)
- Submucosa: Generally loose connective tissue without significant fat.
Hard Palate Histological Structure
-
Hard Palate
- Appearance: Firm and keratinized surface, may show palatine rugae (Ridges of mucous membrane)
- Type of mucosa: Masticatory mucosa
- Epithelium: Keratinized stratified squamous epithelium
- Lamina Propria: Dense, regular connective tissue (referred to as palatine bone)
- Submucosa: Thin, may contain salivary glands (palatine glands)
Soft Palate Histological Structure
-
Soft Palate
- Appearance: Soft, flexible surface, may show uvula and mucous gland openings
- Type of mucosa: Lining mucosa
- Epithelium: Non-keratinized stratified squamous epithelium
- Lamina Propria: Loose connective tissue with more elastic fibers
- Submucosa: Contains muscle, and more prominent minor salivary glands
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the anatomy and function of the muscles of the floor of the mouth, including the Mylohyoid, Hypoglossus, and Geniohyoid. Additionally, it includes histological aspects of the floor of the mouth, vital for understanding these structures in the context of swallowing and speech. Test your knowledge on origin, insertion, action, and nerve supply.
